Back out r58711. It appears to have caused video/media-related ui_tests...

chrome/renderer/render_view.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/render_view.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 2419 matching lines @@
       new media::FilterFactoryCollection();
   // Add in any custom filter factories first.
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   if (!cmd_line->HasSwitch(switches::kDisableAudio)) {
     // Add the chrome specific audio renderer.
     factory->AddFactory(
         AudioRendererImpl::CreateFactory(audio_message_filter()));
   }
 
   if (cmd_line->HasSwitch(switches::kEnableAcceleratedDecoding) &&
-      !cmd_line->HasSwitch(switches::kDisableAcceleratedCompositing)) {
+      cmd_line->HasSwitch(switches::kEnableAcceleratedCompositing)) {
     // Add the hardware video decoder factory.
     factory->AddFactory(IpcVideoDecoder::CreateFactory(
         MessageLoop::current(),
         reinterpret_cast<WebGLES2ContextImpl*>(
             webview()->gles2Context())->context()));
   }
 
   WebApplicationCacheHostImpl* appcache_host =
       WebApplicationCacheHostImpl::FromFrame(frame);
 
@@ skipping 3227 matching lines @@
   PendingOpenFileSystem* request = pending_file_system_requests_.Lookup(
       request_id);
   DCHECK(request);
   if (accepted)
     request->callbacks->didOpenFileSystem(name, root_path);
   else
     request->callbacks->didFail(WebKit::WebFileErrorSecurity);
   request->callbacks = NULL;
   pending_file_system_requests_.Remove(request_id);
 }